These are not pictures of airplane being washed. According to a Spluch commentator , it’s a process called bird bath, being done on aircraft that fly over the ocean at low altitude to remove salt deposits that may lead to corrosion on the airplane.

Not a real plane wash, but it is still something cool to see.

Some relevant posts you might be interested:

• Gay Flight
• Time-lapse Footage of Hudson Plane Being Lifted
• Tonight, We Dine in Plane